baber/WOPTO huggingface dataset:
Patent GB-858342-A (GB)
Title: Apparatus for indicating the distortion of telegraph signals
IPC: H04L25/04
Filed: 1959-05-22
Abstract: 858,342. Testing-apparatus for telegraphy. STANDARD TELEPHONES & CABLES Ltd. May 22, 1959 [May 23, 1958], No. 17506/59. Class 40(3). In a circuit arrangement for indicating the distortion of telegraph signals, the signals 2, after differentiation at 3, are applied simultaneously to two monostable circuits 5, 7 responsive respectively by the agency of rectifiers 9, 11 to positive-going and negative-going impulses 10, 12 which produce negative and positive pulses 13, 14 having durations equal to a predetermined percentage of the element period of the signals. The pulses 13, 14 are differentiated at 15, 17 to provide trains 16, 18 of negative-positive and positive-negative pulse pairs applied to the grid and cathode respectively of two thyratron valves T1, T2. The incoming signals 2 are applied through resistor 22 to the cathode of T1 and to the grid of T2. The cathode of the valve T1 and the grid of the valve T2 are biased by resistors 20, 21 and resistors 23, 24, 25 so that respectively the negative pulses of the train 16 and the positive pulses of the train 18 do not have any effect on the valves T1, T2. If, however, a positive signal element changes to negative at or before the occurrence of the positive pulse of the train 16, the valve T1 will be rendered conducting and operate a relay Re controlling an alarm. Similarly, if a negative element of the incoming signal changes to positive before the negative pulse of the train 18 occurs, the valve T2 conducts and the alarm-controlling relay Re is operated. The relay Re is released by the operation of push-button P to open the anode circuit of the valve Tl or T2 which has been rendered conducting. Reference has been directed by the Comptroller to Specification 823,874.
Patent GB-1469528-A (GB)
Title: Load supporting assembly for a fork lift truck or like lifting  device
IPC: B66F9/12
Filed: 1974-06-07
Abstract: 1469528 Reach mechanism for fork lift trucks R SANDERSON 7 June 1974 [11 April 1973] 17514/73 Heading B8H A reach mechanism for a fork lift truck comprises a frame D with a releasable fastening J for detachable connection to the lift carriage of a fork lift truck, a frame C to which load engaging forks K are movably mounted and two pairs of crossed links E, E<SP>1</SP> each link pivotably connected at one end to a respective frame and mounting a roller G at the other end for movement along inwardly facing channels of the respective frames. A hydraulic actuator H acts between fixed and movable cross-bars on the frame D to effect extension and retraction of the reach mechanism.
Patent GB-735153-A (GB)
Title: Movable pneumatic descaling apparatus for descaling ships' keels and the like
IPC: B63B59/06
Filed: 1953-06-24
Abstract: 735,153. Cleaning ships' hulls. HILLIERS' SCHEEPSCLASSIFICEER-EN VERFBEDRIJF N.V., W. June 24, 1953 [Aug. 18, 1952]; No. 17528/53. Class 113 (1). In a pneumatic apparatus for descaling the under surfaces of ships comprising a wheeled carriage 16 and a scaling device 1 consisting of a number of rows of pneumatic hammers, the device is movably mounted on the carriage in such a manner that it can be pressed in any direction against a downwardly directed surface to be descaled. In the embodiment of Fig. 1 the descaling device 1 is mounted at the end of a bar 3 in such a manner as to be rotatable about two axes perpendicular to each other, the bar is slidable in one end of a lever 2 and can be secured in any desired position by a clamp 4, the other end of the lever 2 carries a weight 10 which is secured in any desired position by a clamp 11 so that the device 1 is pressed against the surface to be descaled with an adjustable pressure, and the lever is pivoted at 12 to a bar 13 which is slidable in, and may be secured by clamp 15 to, a standard 14 mounted on the carriage 16. In the embodiment of Fig. 3 the descaling device 1 is supported by pneumatic jack 21, the guide bars 23 of which may slide round circular paths 25 mounted on an underplate 20 connected to the carriage 16 by guide bars 27 and springs 28.
Patent GB-543344-A (GB)
Title: Electric protective devices and energizing circuits therefor
IPC: H02H5/04
Filed: 1940-12-11
Abstract: 543,344. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., PETCH, T. H., and LIDDIARD, H. W. C. Dec. 11, 1940, No. 17540. [Class 38 (v)] In an arrangement for protecting a circuit element against overheating wherein the element X is inserted as one arm of a bridge with protective relay Y connected across diagonally - opposite points in order to render the arrangement independent of fluctuations of supply-voltage V, the arm L is a resistance the value of which depends on the applied voltage. If the element X has a position temperature-coefficient of resistance, the arm L may be a tungsten lamp, the resistance of which is proportional to the square root of the applied voltage and independent of ambient temperature, whereas if element X has a negative temperature-coefficient, L may be a carbon lamp. The technical considerations underlying the invention are fully set out in the Specification, but the effect is to obtain a fixed tripping value for the relay equal to the difference between the voltages V<SP>1</SP>, V<SP>2</SP> across the resistances R<SP>1</SP>, R<SP>2</SP> of negligible temperature coefficient over a reasonable range of voltage V, whilst allowing the temperature to vary between certain limits, namely, the maximum permissible and a figure somewhat above normal working temperature.
Patent GB-1471825-A (GB)
Title: Electrical luminescent display devices
IPC: G09F9/30
Filed: 1975-04-28
Abstract: 1471825 Matrix displays NORTHERN ELECTRIC CO Ltd 28 April 1975 [2 May 1974] 17562/75 Heading G5C An electrogenerated chemiluminescent (EGCL) display device includes a photoconductive device 12 in one lead which is turned on by a pulse of suitable characteristics and is subsequently maintained on by light emitted by the EGCL material 10. In a figure of eight display device, a layer 30 of EGCL material extends over segment electrodes 27 surrounded by a common electrode 28. The device includes FET's comprising gates 21, sources 24 and drains 25, transparent layers 22, 26 of Al 2 O 3  and a photoconductive layer 23 of CdS or CdSe. Energizing pulses to selected gates renders them conductive, causing pulses to be applied to segments of the layer 23 which become conducting. Segments are turned off by a pulse of opposite sign or by using another device to by-pass current to the EGCL material. The segments may be arranged in a matrix with two semi-conductor elements in series to perform an AND function, the semi-conductor elements being connected to row and column conductors respectively. A further pair of semiconductor elements may be used to turn a segment off; in this arrangement the substrate includes four effective layers. The semiconductors may be replaced by pairs of photoresistors each sensitive to light of a particular wavelength. X and Y conductive arrays between further similar photoresistive material can be used to sense the displayed pattern by scanning. The EGCL material comprises a phosphor, a solvent and an electrolyte, the application of a potential produces a redose reaction with light emission.
Patent GB-711752-A (GB)
Title: Amplitude control unit
IPC: H01P1/201
Filed: 1952-07-11
Abstract: 711,752. lmpedance networks. STANDARD TELEPHONES & CABLES, Ltd. July 11, 1952 [Aug. 9, 1951], No. 17564/52. Class 40 (8) An amplitude control unit, which may be adjusted for selected distribution of signal energy of desired amplitude levels between two loads as, for example, associated antennae, without affecting the phase of the signal, comprises a bridge circuit supplied with two currents I', I<SP>2</SP>, whose plates are simultaneously controlled by the phase changer 2 to vary in complementary relation. The bridge comprises three one-quarter wavelength legs 14-16, and one three-quarter wavelength leg 17, all made up of coaxial-lines. The phase changer 2 comprises a conductor having a loop or cavity 3 with which a probe 4 is in coupled relation, whereby one line is lengthened and the other is shortened simultaneously, which gives a corresponding amplitude variation at the outputs of the bridge, without any variation of phase. The phase-changer shown in Fig. 1 may be replaced by a telescopic coaxial structure, Fig. 3 (not shown), or by a device in which a dielectric sector is rotated between parallel conductors disposed in a semi-circle, Figs. 4, 5 (not shown).
Patent GB-1119113-A (GB)
Title: Method for grinding tooth flanks of toothed gear wheels
IPC: B23F21/02
Filed: 1966-04-21
Abstract: 1,119,113. Gear-grinding; abrasive tools. MAAG GEAR WHEEL & MACHINE CO. Ltd. 21 April, 1966 [23 April, 1965], No. 17589/66. Headings B3D and B3K. A method of grinding a gear tooth by a dished grinding wheel 11, Fig. 3, comprises feeding the wheel towards the tooth flank, by the full grinding allowance US, reciprocating it in the direction of the width of the tooth and moving it from tip to root so that the grinding allowance on the tooth is removed by the face 11b of the rim. This method is contrasted with the known method where the wheel 1, Fig. 1, is fed-in gradually by amounts #US, and the metal is removed by the face of the wheel. The wheel may have a rounded tip and a tapered rim as shown in Fig. 5. Figs. 7 and 8 (not shown) illustrate grinding paths with continuous, slow root-to-tip feed and with intermittent root-to-tip feed respectively. The broken lines represent return paths when a light finishing pass is made with no additional feed. Two wheels are used, one for right-, and one for left-hand flanks. Each grinding wheel may be tilted towards or away from the tooth profile.
Patent GB-273902-A (GB)
Title: Improvements in wind screen wipers
IPC: B60S1/18
Filed: 1926-07-14
Abstract: 273,902. Dudley, W. July 14, 1926. Windows and the like, cleaning.-Comprises improvements in the type of screen cleaner described in Specification 249,745. The sleeve 1, in which the wiper carrying slide 4 moves, is provided with a longitudinal groove through which a part of the slide projects, and depending flanges 6, 8 between which a rubber flap 9 normally extends but which is brushed aside during the passage of the wiper. The slider is connected to a pin 16 integral with one of the links of the chain which passes through the slider.
Patent GB-713734-A (GB)
Title: Improvements in supply circuits for electric discharge tubes
Inventor: BLOXSIDGE WILLIAM ROBERT
IPC: H05B41/232
Filed: 1950-07-13
Abstract: 713,734. Supply systems for space discharge apparatus: protective arrangements. THORN ELECTRICAL INDUSTRIES. Ltd. May 8, 1951 [July 13, 19501, No. 17611/50. Class 38(4) In a supply circuit for one or a pair of hot-cathode electric discharge tubes, e.g. lamps D1, D2, each having two filamentary electrodes E1, E2, E3, E4, wherein at least part of the main winding W1 of a transformer F having filament heating windings W2...W4 is connected in shunt with the lamp(s) and at least part of such main winding is connected in series with a ballast capacitor C1 to A.C. supply terminals L, N, a further capacitor C2 is connected in series with the tube(s) and the firts mentioned at least part of the main winding to prevent the circulation of undirectional current through the latter should the thermionic emissions of the two electrodes of a tube become unequal as the tube ages. The ballast impedance includes a choke B, or two chokes, Figs. 3 and 4 (not shown), one connected in each supply lead. The secondary winding W3 is autoconnected, and the other secondary windings W2, W4 are separate from the main winding W1. Preferably the resonance frequency of the capacitor C1 and main winding W1 is near or equal to that of the supply to apply a voltage higher than that of the supply between the lamp electrodes before starting. With only part of the main winding connected across the supply, or across the tubes, the ratio provided by such transformer differs from 1:1. Figs 1... 4 (not shown), illustrate various single tube circuit arrangements.
Patent GB-334604-A (GB)
Title: Improvements in or relating to crane skips and the like
IPC: B65D88/56
Filed: 1929-06-08
Abstract: 334,604. Cothay, F. H. June 8, 1929. Skips.-A skip has a cross-bail 16 attached as by pivots 13 rearwardly of the centre of gravity of the loaded skip, the cross-bail carrying sling- hooks 17, while a downwardly opening sling-hook 20 is attached to the skip forwardly of the centre of gravity as by a second cross-bail 18. When the loaded skip is lowered to the ground and then raised slowly, the chain on the downwardly opening sling-hook 20 falls out and the skip discharges.
Patent GB-931181-A (GB)
Title: A method of producing cylindrical rollers for roller bearings
IPC: B21K1/02
Filed: 1962-05-08
Abstract: 931,181. Making rollers. MALMEDIE & CO. MASCHINENFABRIK G.m.b.H. May 8, 1962 [Oct. 7, 1961], No. 17682/62. Class 83 (2). A method of making cylindrical rollers for roller bearings comprises flattening a blank, passing it through a series of dies to form rounded edges and finally sizing it during one or more pressing stages. A blank 4 is parted off from a rod 1 by tools 2, 3 and transferred by a gripper (not shown) to a flattening die 6, removed, rotated through 180 degrees and positioned in a die 10 which imparts to the edges a radius greater than that required on the finished roller. The blank 4b is subsequently removed, turned through 180 degrees and both edges simultaneously radiused to their final size in a die 14. The blanks are finally sized in a further two pressing stages. All the pressing operations are carried out in a transverse transfer press having automatically rotating grippers.
Patent GB-214512-A (GB)
Title: Improvements in chucks
IPC: B23B31/16
Filed: 1923-07-09
Abstract: 214,512. Beck, F. July 9, 1923. Chucks. - In a selfcentring chuck the jaws 1 are provided with racks engaged by pinions 3 mounted on fixed axles and rotated by a worm ring 4. The ring carries teeth 9 and may be rotated (a), for quick actuation of the jaws by a pinion 11 mounted on a hand-rotatad disc 5 and keyed there to by a projection 12, Fig. 2, or (b), for slow actuation by the pinion 11 being free to rotate on its axis and engaging with 'both the teeth 9 and teeth 10 on a ring fixed to the chuck body, Fig. 4, the number of teeth 9 being one greater than the teeth 10. The axle of the pinion 11 may have annular grcoves to receive a spring locking-pin. The axles of the pinions 3 are mounted in the adjacent ends of segments 18 secured to the body by bolts 19, and set-screws may be provided in the segments to take up wear of the pinions by moving these towards the jaws and the axis of the chuck. The pitch of the worm 4 is equal to the pitch of the pinions 3 multiplied by the number of jaws in order to render the latter interchangeable, and the worm has as many threads as there ere jaws.
Patent GB-460947-A (GB)
Title: Improvements in motor railway vehicles or trucks
IPC: B61D15/12
Filed: 1936-06-26
Abstract: 460,947. Rail tractors and motor vehicles. ENTREPRISE DROUARD FRERES. June 26, 1936, Nos. 17793 and 17794. Convention dates, June 26, 1935 and Dec. 17, 1935. [Classes 79 (i) and 79 (iii)] [Also in Group XXXIV] A railway motor truck or tractor is driven through chain gearing by a readily-removable power unit fixed to one side of the truck and having a longitudinal driving shaft, braking means being provided acting both on the wheels and the rails. When the power unit has been removed the truck itself can be readily removed from the rails. In the construction shown, the frame a of the truck, which may carry a load platform, is mounted on rail wheels b driven from a longitudinal shaft h through reversing gear j, shaft d, and chain gearing e, f providing a reducing gear. The shaft h is connected by a slip joint p<1> to a power unit comprising a motor m, clutch, and changespeed gear. The power unit is provided with handles n, o and rests on a bracket l on the truck, being secured in position by a pin r. The rear end of the power unit has a sleeve q which engages over the end of a casing k on the truck. Two sets of braking means are described acting on the wheels b through pivoted shoes or bands and on the rails by slippers w, Fig. 6. The slippers are carried by parallel links z controlled by springs z<1>, and are operated by a hand or foot lever x through a shaft y and cams or levers. When long loads are to be carried, the ends beyond the motor truck may be supported by one or more trailing trucks. More than one power unit may be mounted on the truck, and all the wheels may not be driven.
Patent GB-892017-A (GB)
Title: A combined counting and coding device
IPC: H04M15/10
Filed: 1958-06-04
Abstract: 892,017. Electric selective signalling systems. SELDEN, O. C. June 2, 1959 [June 4, 1958], No. 17840/58. Class 40 (1). [Also in Group XIX] In a device for counting electrical pulses and providing a coded output representation of the number of pulses counted, pulses to be counted energize an electromagnet g whose armature h carries a pawl k arranged to step up by one unit a horizontal bar b. The bar b carries sliding contacts 1<SP>1</SP>-6<SP>1</SP>, A<SP>1</SP>-C<SP>1</SP> co-operating with conductive strips 1-6, A-C, the strips 1-5 having wide and narrow parts so that for each vertical position of the bar b, a different combination of the contacts 1<SP>1</SP>-5<SP>1</SP> is in contact with the corresponding associated strips 1-5. The contact 6<SP>1</SP> permanently engages the associated strip 6 so that application of a potential to a terminal 6<SP>11</SP> connected to the strip 6 causes energization of output terminals 1<SP>11</SP>-5<SP>11</SP> in a coded representation of digit registered by the position of the bar b. When the position " 10 " is reached by the bar b, a circuit is completed via contacts B<SP>1</SP>, C<SP>1</SP> to energize an electromagnet p, thereby releasing a detent n  and the pawl k from engagement with one of the notches c to allow the bar b to be returned to the " 0 " position under the action of a spring e. Energization of the magnet p causes also an arm t to rock, thereby closing a switch u to maintain a holding circuit for the magnet p via sliding contacts A<SP>1</SP>, C<SP>1</SP> until the " 0 " position is reached when this circuit is interrupted at the sliding contact C<SP>1</SP>. The arm t operates also a switch v to produce a tens transfer pulse to the next denomination, which may be similar to that described, at the terminal w. The device may be reset by a pulse applied at a terminal x to energize the magnet p over a circuit including sliding contacts A<SP>1</SP>, C<SP>1</SP>. The outputs 1<SP>11</SP>-6<SP>11</SP> may be arranged to operate a recording device by punching. The device may be applied to make periodic recordings of the reading of an integrating electricity meter, the meter being provided with an impulsing arrangement adapted to supply pulses to the described device.
Patent GB-463311-A (GB)
Title: A corrosion resistant alloy
IPC: C22C38/10
Filed: 1935-06-21
Abstract: A corrosion-resistant alloy comprises 25-80 per cent of iron, 5-25 per cent of phosphorus and 4-70 per cent of nickel and/or cobalt: the alloy may also contain 0-30 per cent of chromium, copper, manganese, molybdenum, tin, tungsten, vanadium, antimony, arsenic, bismuth, cadmium, and zinc.  Silicon, if present, does not exceed 0,5 per cent.  Examples are given of alloys containing specified proportions of iron, nickel, phosphorus; iron, nickel, phosphorus, molybdenum, manganese; iron, nickel, phosphorus, copper; iron, cobalt, nickel, phosphorus, molybdenum. In making the alloy, scrap metal may be employed; for instance, brass scrap may be used to introduce copper and zinc and small proportions of antimony, arsenic, bismuth, cadmium, and tin. Calcium phosphate may be used as the source of phosphorus and as a flux.
Patent GB-624353-A (GB)
Title: Supported catalyst
IPC: B01J23/40
Filed: 1947-07-07
Abstract: A compound of a platinum group metal is hydrolysed in aqueous solution in the presence of an anhydrous oxide of a non-precious element taken from Groups II to VIII, upon which platinum metal oxide is thereby deposited, and the latter is then reduced to metal.  The preferred carrier is alumina; oxides of chromium, zirconium, iron, and silicon are also mentioned.  The hydrolysable salt may be, e.g., potassium tetrachloroplatinate, the sodium salt of tetrachloropalladic acid, or rhodium chloride.  The hydrolysis is effected by boiling the mixture, but except when the carrier is alumina it is desirable also to add some alkali such as sodium bicarbonate.
Patent GB-985025-A (GB)
Title: Process for coating zinc and zinc-iron alloy surfaces
IPC: C23C22/33
Filed: 1961-05-17
Abstract: Zinc and zinc-iron alloy surfaces are treated with an aqueous solution consisting of phosphate ions equivalent to 0.5-3% by weight of phosphoric acid and chromate ions equivalent to 0.5-3.0% by weight chromic acid, at a pH in the range 1.3-3.8 and at a temperature of 70-170  DEG F.  Nitrate ions equivalent to 0.1-0.4% by weight sodium nitrite may also be present.  The pH of the solution may be maintained in the range 1.3-3.8 by addition of H3PO4 and chromic acid, chromate salts or sodium nitrite.
Patent GB-574329-A (GB)
Title: A chordal slotting attachment for hairspring collets or similar small annular members
IPC: B23D45/00
Filed: 1943-10-29
Abstract: 574,329. Making hairspring collets. BULLER, A. C. G., and TORRY, H. S. KENDALL-. Oct. 29, 1943, No. 17931. [Classes 83 (ii) and 83 (iii)] Milling-machines.-A device for cutting a slot along the chord of an arc on the face of a small annular member such as a hairspring 'collet, comprising a circular saw rotatably mounted in a rigid frame and a plunger that carries the work and moves it into contact with the saw is characterised by work-holding means consisting of a spring-controlled bridge which meets the advancing work and bears upon at least half the face of the annular member to hold it firmly on the movable plunger during the cutting operation. The frame comprises plates 3 and 4 secured to a base-plate 2 by means of a horizontal spacing block 5, a vertical distance plate 6 and screws 7 and another plate 15 secured to the baseplate and at its upper end adjustable to and from the plate 4 by means of screws 17 and nuts 18. Plates 3 and 4 carry a sleeve 10 in which is mounted the shaft 11 of the circular saw 13 supported at each side by washers 14 extending close to the saw teeth. Guide bars 19 and 20 are secured to the plate 15 to form a passage of triangular section for a guide block 21 in which is mounted a mandrel 27 carrying an arbor 28 with a horizontal upper surface and a pin 30 for supporting the collet 29. The screw 17 allows the arbour to be correctly positioned relatively to the saw. From a horizontal plate 9 adjustably secured to the upper ends of plates 3 and 4 depend sleeves 33 to which is secured a bridge or cross-bar 36 shaped to match the profile of the inner washer 14, Fig. 5. In operation, the guide block 21 with arbor 28 and collet 29 are raised by means of a hand lever 22 until the edge of the crossbar 36 bears on the collet to hold it firmly on the arbor under the action of springs 37. Further movement of the lever 22 feeds the collet up to the saw for the slotting operation. Depth of cut is limited by a stop screw 32.